Drive of rayon spinning boxes



Patented Apr. 14?

DRIVE F RAYON SP 1| Great Britain Application September 24, 1945, SerialNo. 618,214 In Great Britain October 12, 1944 1 Claim.

This invention has for its object to provide an improved arrangement ofthe drive from the usual self contained motor unit to the spinning boxwhich obviates the projection of air currents on to the spinning boxwhich cause crystallisation in the yarn in the box and on the exteriorof the box of the spinning bath liquor. The improved arrangement alsoobviates the passage of such liquor to the exterior of the motor unit.

The invention consists in a driving arrangement of a rayon spinning boxcomprisng a motor unit, a spindle driven by said unit, a spinning boxupon and driven by said spindle, and a spinning box'chamber around saidbox, the aforesaid spindle passing through ahole in the base of thechamber, characterised in this, that an imperforate annular frame uponthe top of the motor unit extends through an upstanding or upwardlyprojecting lip around the hole in the base of the chamber, and aflexible ring attached to said frame extends pver the top of said lip, athrower upon the motor spindle projecting over the top ,of the annularframe to prevent liquor passing into the frame and on to the motor unit.

Referring to the accompanying explanatory drawings:

Figures 1 and 2 are sectional elevations showing two spinning boxdriving arrangements in accordance with this invention.

We provide an imperforate annular frame a upon the top of the motordriven spindle unit 12, such frame projecting through the hole 0, formedin the base of the spinning box chamber (1 and we secure the centreportion of a flexible or rubber ring e to the top of such frame a, theouter portion of such ring extending over the upwardly projecting lip 1around the hole before referred to in the base of the spinning boxchamber so as to prevent the passage of air or liquid around such frame.

The spindle g of the motor unit projects above the annular.frame a,where it has a mushroom shaped head or thrower h thereon beneath thedisc i upon which the bottom of the spinning box 1 rests and by which itis driven in the usual manner. The mushroom haped head or throwerprojects over the top of the annular frame so as to prevent liquorpassing into the frame and on to the motor unit from the spinning boxabove. No air passes through the annular frame so that rotation of thespinning box cannot cause any air circulation from below, such as wouldcause crystallisation of the spinning bath liquor on the exterior of thebox or in the yarn in the 5 box. The annular frame a may be integralwith instead of attached to the top of the motor unit.

In Figure 2, an imperforate annular frame k of conical shape is used, towhich is secured the centre portion of a flexible ring I having a beadedor thickened edge m. The upwardly projecting lip n around the hole inthe base of the spinning box chamber also has a beaded or thickened edge0, over which the edge m passes in order to give a good seal between thering I and the lip n.

What we claim is:

A driving arrangement for a rayon spinning box, comprising-a motor unit,a spindle driven by said unit, a spinning box upon and driven by saidspindle, a spinning box chamber around said box, an imperforate annularframe upon the top of the motor unit, the base of the spinning boxchamber being apertured to allow the spindle and the annular framesurrounding the spindle to pass through, an upwardly projecting liparound the aperture in the base of the chamber, a flexible ring attachedto said annular frame and extending over the top of said lip, and athrower upon the pindle beneath the spinning 30 box, projecting over thetop of the annular frame and spaced from the flexible ring, to preventliquor passing into the frame and on to the motor unit.

LESLIE CHARLES GOODWIN.

CHARLES TINSLEY.

REFERENCES,

The following references are of record in the file of this patent:

Number Name Date 1,998,490 Harrison Jan. 22. 1935 1,907,929 Zur LowenMay 9, 1933 1,916,830 Etzkorn July 4, 1933 FOREIGN PATENTS NumberCountry Date 539,627 German Nov. 30. 1931

